20453804920

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1153}}^1\times {\mathrm{4391}}^1$

素因数の和:5656

約数の個数: 64

約数和(自身を含む): 46527618240

約数和(自身を除く): 26073813320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 1153, 2020, 2306, 4040, 4391, 4612, 5765, 8782, 9224, 11530, 17564, 21955, 23060, 35128, 43910, 46120, 87820, 116453, 175640, 232906, 443491, 465812, 582265, 886982, 931624, 1164530, 1773964, 2217455, 2329060, 3547928, 4434910, 4658120, 5062823, 8869820, 10125646, 17739640, 20251292, 25314115, 40502584, 50628230, 101256460, 202512920, 511345123, 1022690246, 2045380492, 2556725615, 4090760984, 5113451230, 10226902460, 20453804920]

約数ペア:

[(1, 20453804920), (2, 10226902460), (4, 5113451230), (5, 4090760984), (8, 2556725615), (10, 2045380492), (20, 1022690246), (40, 511345123), (101, 202512920), (202, 101256460), (404, 50628230), (505, 40502584), (808, 25314115), (1010, 20251292), (1153, 17739640), (2020, 10125646), (2306, 8869820), (4040, 5062823), (4391, 4658120), (4612, 4434910), (5765, 3547928), (8782, 2329060), (9224, 2217455), (11530, 1773964), (17564, 1164530), (21955, 931624), (23060, 886982), (35128, 582265), (43910, 465812), (46120, 443491), (87820, 232906), (116453, 175640)]